Police are investigating a deadly shooting at San Jose State University. Campus police say the shooting happened Tuesday night in a university parking garage. Three people died, including the suspected gunman. Police believe the victims knew each other and say the incident was not random.

The Associated Press reports:

Investigators have not released a possible motive or said whether the victims and suspect were students at the school. Two people were pronounced dead at the scene. The third died at Santa Clara County Valley Medical Center.

The coroner has identified the three, but their names were being withheld until relatives could be contacted, campus spokeswoman Pat Lopes-Harris said.

The slayings are believed to be the first shooting deaths in the history of the Northern California campus, Harris said. The first officers on the scene recovered a handgun and quickly determined “it was highly unlikely anyone else was in danger” at the 30,000-student campus, she said.

The San Jose Mercury News also reports that this shooting was “the second triple-shooting in San Jose in four days and marked the city’s 19th and 20th homicides of the year.” Three men were shot, and two were killed at a house party over the weekend.